Hello All,\n\nWe recently moved into a new house, and I replaced all our previous gear with the following:\n\nLG 75" 4k TV model 75SJ8570\nSony STRDN1080 AVR\nJBL Arena 180 front speakers\nJBL Arena 125C center channel speaker\nKlipsch R-10SWi 10" wireless subwoofer\nSnapAV Episode Signature 1700 6.5" in-ceiling speakers\nOppo BDP-93 Blu-ray player (my only carryover component)\nApple TV 4k\n\nThe ceiling speakers are our "surround" speakers and are positioned just behind & above the main listening position on the couch. approximately 7' apart. The ceiling height is 10'.\n\nThe electrician \/ amateur AV dude who hung our TV also did all the wiring and hooked up the receiver. He's got it configured as 5.1. But in the Sony speaker setup menu, you can also choose a 3.1 setup, with 2 "additional'" ceiling speakers.\n\nWhich would be the best way to configure such a setup? The Sony setup process is somewhat confusing, and the manual is almost useless. I don't know whether to set up the ceiling speakers as a conventional 5.1 configuration during setup, or go the 3.1 route + ceiling speakers. And it's not clear how to hook those rears up for each mode. There are speaker connections for "surround back\/height" or simply "surround". Any advice would be much appreciated, TIA!